Vaillant aquaPLUS VUI 362-7, Instructions For Installation And Servicing

Page 1: ...VUI 362 7 Gas fired room sealed fan assisted combination boiler with integrated 15 litre power store For the installer Instructions for installation and servicing aquaPLUS GB...

Page 2: ...to the boiler 17 5 11 Electrical installation 18 5 12 Connection to the main supply 18 5 13 Electronic board layout 20 5 14 Controls 21 5 15 Thermostatic radiator valves 22 Page 5 16 Frost protection...

Page 3: ...ion ring 3 1 Controls cover door 4 1 Lower cover plate packed in bottom packaging 5 1 Cold water inlet valve 6 3 Flow and return service value gas service valve 7 5 Copper tails for gas and water pipe...

Page 4: ...an be installed with either a horizontal or vertical RSF room sealed fan assisted flue Two types of flue systems are available the standard concentric flue system 100 mm outside diameter and a larger...

Page 5: ...ssure required natural gas 20 mbar Gas supply G20 Gross CV s t 37 8 MJ m3 Gas burner pressure max rate 11 0 mbar Gas burner pressure ignition rate 1 1 mbar Gas rate max DHW 4 3 m3 h CH temperature flo...

Page 6: ...y 1 Air duct 2 Fan 3 Power store 4 Main heat exchanger 5 Temperature sensor NTC I 6 Temperature sensor NTC III 7 Diverter valve 8 DHW pressure relief valve 9 Temperature sensor NTC IV 10 DHW heat exch...

Page 7: ...iler Specification 3 Instructions for installation and servicing aquaPLUS VUI 362 7 7 6 3 8 11 12 9 13 25 14 15 16 17 18 19 20 21 22 23 10 7 26 4 5 1 2 24 27 28 29 30 Fig 3 2 Functional Diagram aquaPL...

Page 8: ...Scotland the electrical provisions of the Building Regulations Scotland and in IE the current edition of IS 813 and the current ETCI rules in respect of the installation of a boiler in a room containi...

Page 9: ...flexibility A vertical flue system is also available Art No 303 800 Refer to flue system installation instructions for full details Fig 4 1 Art No 303 807 Fig 4 2 Art No 303 800 48 1285 603 48 750 48...

Page 10: ...40 1 It is recommended that a fanned flue terminal should be positioned as follows a at least 2 m from an opening in a building directly opposite and b so that the products of combustion are not direc...

Page 11: ...e or microbore systems Copper tubing to BS 2871 Part 1 should be used for water carrying pipework All capillary joints in all DHW pipework must be made with lead free solder Particularly where a new b...

Page 12: ...atic radiator valves and no additional by pass is required 4 9 10 Venting The boiler is fitted with an automatic air vent Additional provision should be made to enable the heating system to be vented...

Page 13: ...openable door etc Fig 5 1 Dimensions of boiler 440 800 497 Note If the boiler is to be fitted in a timber framed building it should be fitted in accordance with Institute of Gas Engineers Publication...

Page 14: ...it hole Upper hole 2 indicates top outlet flue with flue turret facing rearward Mark the position of the hanging bracket fixing holes 1 Drill 2 holes 10 mm for the hanging bracket Top outlet rear exit...

Page 15: ...g bracket 1 Lower the boiler slowly onto the hanging bracket so that the slots at the rear of the boiler fully engage onto the hanging bracket 1 1 3 2 Note If the boiler is to be fitted in a timber fr...

Page 16: ...old water mains inlet and hot water outlet Flush all foreign matter from the mains supply before connecting to the boiler Connect the cold water service valve 1 to the cold inlet water connection 3 of...

Page 17: ...the nuts Connect the central heating pipework to the flow 9 and return 4 tails Pressure Relief Valves central heating and domestic hot water Connect discharge pipes not less than 15 mm diameter to th...

Page 18: ...ables 6 8 or 16 3 x 0 75 to 3 x 1 5 mm2 should be used Warning This appliance must be earthed Important Ensure that all cords pass through the cable clamps in the rear of the control box and are secur...

Page 19: ...r Installation Sequence 5 Instructions for installation and servicing aquaPLUS VUI 362 7 19 Fig 5 9 Exposed rear view of switchgear cabinet Fig 5 10 Wiring system 3 N L 9 8 7 5 4 3 RT 24V 230V RT 230V...

Page 20: ...for diverter valve Socket X7 for accessory box connection Socket X8 for VRC VC connection Room thermostat 230 V connections 3 4 and 5 Mains power supply connections L N and earth Socket X12 pump conne...

Page 21: ...TAT PRT11 PRT17 L N 4 L N 3 3 4 1 2 3 4 3 L N 2 3 4 L N 3 4 1 3 4 3 4 5 5 Connection details for external time switches and boiler terminal strip Fig 5 13 shows the connection details where a time swi...

Page 22: ...RV s are used they are used in conjunction with a programmable room thermostat or separate timer and room thermostat to ensure complete boiler shut down when the heating demand is satisfied The radiat...

Page 23: ...here is adequate ventilation extinguish all naked flames and do not smoke whilst purging After purging the gas service valve connection must be retightened and tested for soundness The boiler itself d...

Page 24: ...1 ON position Continue holding button until display alternates between P1 P2 P3 P11 P12 and P13 Release button Press button until P1 full gas rate is shown in display Press i button to operate boiler...

Page 25: ...trol Press and hold the button while pressing the button turn the main ON OFF control to the 1 ON position Continue holding button until display alternates between P1 P2 P3 P11 P12 and P13 Release but...

Page 26: ...P3 P11 P12 and P13 Release button Press button until P1 full gas rate is shown in display Press i button to operate boiler at full gas rate Using a 10 mm spanner turn nut 2 to adjust the burner opera...

Page 27: ...nition rate is shown in display Press i button to operate boiler at full gas rate Use a suitably sized screwdriver to turn the inner screw 2 Turn the screw 2 clockwise to increase the ignation rate Tu...

Page 28: ...required Identify required range rating setting and note main burner pressure in mbar for that output Turn on the central heating Ensure that any thermostatic radiator valves are open and set to high...

Page 29: ...crease the value Observe the U gauge as the button is pushed and stop pushing when the required main burner pressure has been achieved 5 After setting press and hold the i button for five seconds or u...

Page 30: ...ow adjusted by pushing the button until the gauge equals the pressure as detailed in the table below Note The button has no function in this mode if the required pressure is exceeded during set up thi...

Page 31: ...ting points either side at the top of the boiler engage Push the casing onto the securing clips at the bottom of the boiler Close control panel 2 Secure control panel by turning both securing fastener...

Page 32: ...r correct operation Fig 8 1 Test for correct functioning I 0 This appliance is fitted with a display unit that uses symbols to show the current operating status of the boiler Additionally to this the...

Page 33: ...iler and system to reach operating temperature Check that the heating system is watertight Turn the boiler off and rapidly drain both boiler and system while still hot Refill the system and release al...

Page 34: ...ing a hot water tap Inspect the burner operation through the viewing window Check that the flames are evenly covering the surface of the burner Inspect for signs of excessive flame lift or sooting 8 F...

Page 35: ...vessel charge point Check that the internal charge pressure of expansion vessel is between 0 7 0 9 bar If pressure is lower than this the vessel should be re pressurised using an air pump Refit valve...

Page 36: ...rect burner operation normal flame or lock out crossed out flame Instructions for installation and servicing aquaPLUS VUI 362 7 36 Fig 10 1 Display indications 10 2 Logical fault finding procedure The...

Page 37: ...is not showing in the boiler display follow the fault finding charts referring also to the status mode table 3 Note If the boiler display is completely blank initially check the two fuses Isolate the...

Page 38: ...S 26 Fan over run store charging S 27 Pump over run store charging S 28 Anti cycling mode store charging S 30 No heating demand from external controls S 31 Summer mode heating control knob in off pos...

Page 39: ...tment values d 00 Part load setting 0 30 d 01 Water pump over run 1 2 3 60 min factory adjusted to 5 min d 02 Maximum burner anti cycling period at 20 C 8 60 min factory adjusted to 15 min flow temper...

Page 40: ...pted 2nd ignitions d 71 Maximum target value for heating system flow 0 82 C 1 87 C factory adjustment 82 C temperature d 72 Pump over run time after filling hot water store 0 1 2 250 s factory adjustm...

Page 41: ...eeded F 22 Dry fire protection No water in appliance pump cable defective pump blocked or defective pump output too low F 23 Dry fire protection difference between flow and No water in appliance pump...

Page 42: ...VDC present between 5V and GND test points on electronic board Replace LCD display Yes No Repair external fault Is the continuity across fuse F1 Go to sheet B Does ON OFF knob operate switch on elect...

Page 43: ...display on the LCD panel Check transformer 230 VAC primary black red and approx 17 VDC secondary blue brown Check replace pump Replace fuse F1 If fan commences operation exchange gas valve After appro...

Page 44: ...fitted is calling for heat Check diagnostic code D 08 see page 39 Is heating demand present No Is 230 VAC present across terminals 4 and 5 No External fault Check all external controls are calling fo...

Page 45: ...637 Check 4 pin connector for fan speed control Does the fan run now Is 230 VAC present across fan terminals Replace electronic board Yes No No Yes No Yes Yes Check replace fan Does the boiler commenc...

Page 46: ...No Check replace gas valve as necessary Does burner light No Replace electronic board Yes Is burner indicator illuminated No Check flame rectification lead and electrode Is burner indicator illuminat...

Page 47: ...flow and return service valves are open No No No Replace electronic board No Check operation of boiler in DHW mode does flame increase in size to full rate Yes Check partial load setting No Check diag...

Page 48: ...ly open and adjustment is at maximum flow rate Does green warmstart indicator flash now Check Clear impeller in Aquasensor replace if necessary Check replace hall sensor Replace electronic board Does...

Page 49: ...icator Hot water demand indicator Ignition indicator MAIN SWITCHBOARD IGNITION ELECTRODES Legend b blue br brown y g yellow green r red p pink or orange t transparent bl black gr grey w white gr b br...

Page 50: ...7 8 9 10 11 X2 Aqua sensor NTC air pressure switch NTC tank earth ionisation electrode NTC coding resistor flow NTC return lifting magnet 24 23 1 12 13 14 15 16 17 18 19 20 21 22 2 3 4 5 6 7 8 9 10 1...

Page 51: ...tank NTC 252 805 Fig 10 6 Warmstart NTC Main heat exchanger 065 087 Fig 10 7 Expansion vessel 10 l 181 079 Fig 10 8 heating Switch and control board 130 821 Fig 10 9 Main transformer 287 450 Fig 10 1...

Page 52: ...12 Short parts list 52 Instructions for installation and servicing aquaPLUS VUI 362 7 Fig 10 1 Fig 10 2 Fig 10 3 Fig 10 5 Fig 10 6 Fig 10 7 Fig 10 8 Fig 10 9 Fig 10 10 Fig 10 11 Fig 10 12 Fig 10 13...

Page 53: ...allation and servicing aquaPLUS VUI 362 7 Fig 10 14 Fig 10 15 Fig 10 16 Fig 10 17 Fig 10 18 Fig 10 19 Fig 10 20 Fig 10 22 For these components please observe the associated installation and removal in...

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Page 60: ...834702_34 GB 03 2005 Subject to alteration...